video {
    width: 100%;
}

body,
html {
    width: 100%;
    height: 100%;
}

.box {
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
    text-align: center;
    padding: 20px 0;
    #progress {
        position: fixed;
        bottom: 80px;
        left: 0;
        width: 10px;
        background-color: brown;
        height: 4px;
    }
}